Ad agency Droga5 released its newest video for sustainable energy company NRG Energy, taking viewers on the journey of a single photon of light from the sun to Earth’s surface. Promoting NRG Energy’s household solar services, the film presents two scenarios: in the first, the photon hits the roof of a house, wasting its potential energy; in the second, the photon hits solar panels on the house’s roof, providing all the power a family needs to go about a typical morning. The video’s voiceover explains that enough sunlight hits the earth every hour to power everything on it for an entire year, and all humanity must do is harness it.